Collapsible form for concrete walls.



P. D. SKAHEN.

COLLAPSIBLE FORM FOR CONCRETE WALLS.

APPLICATION FILED MAY 18| |914. y 1,214,233, Patented Jan. 30,1917.

4 SHEETS-SHEET 1.

m m W mc Nnmzls Parras cuA4 mmm-uma.. wAsnmcruN. n c.

P. D. SKAHEN.

COLLAPSIBLE FORM FOR CONCRETE WALLS.

APPLICATION {ILED MAY I8. 1914. 1,214,233. Patented Jan. 30,1917.

4 SHEETS-SHEET 2.

M .NN .NN n

i T R. 5y v 9 if QW M TNEYS,

APPLICATION FILED MAY I8 i914.

-P. D. SKHEN.

COLLAPSIBLE FORM FOR CONCRETE WALLS.

Patented Jan. 30, 1917.

4 SHEETS-SHEET 3- 'Nr NaRRls PETERS cc., PNTu-LIYMO.. WASHING mN. Dv C.

Ni OR.

A TTU/m5 ys,

P. D. SKA'HEN.

COLLAPSIBLE FORM FOR CONCRETE WALLS.

1,214,233.' APPLICATION FILED MAY 18| 19H. Patented Jan. 30 4 SHEETS-SHEET 4.

la l

ATTORNEYS,

W/TNESSES;

NETE@ TATE PATENT PATRICK D. SKAHEN, OF SYRACUSE, NEW YORK.

COLLAPSIBLE FORM FOR CONCRETE WALLS.

Tof/.ZZ whom it may concern:

Be it known that I, PATRICK D. SKAHEN, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga and State of New York, haveinvented a certain new and useful lCollapsible Form for Concrete Valls, of which the following is a specification.

rlhis invention has for its object the production of a simple and efficient collapsible form for concrete walls which can be readily adapted to mold walls of different contour and angles, and it consists in the combinations and constructions hereinafter set forth and claimed.

n describing this invention, reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views.

Figure 1 isa plan view of this form, partly in section and partly broken away, set to mold a fragment of a wall including a corner and a bay.

Fig. 2 is a side elevation, partly in section, looking to the left of parts seen in Fig. 1.

Fig. 3 is a longitudinal sectional view on the plane on line 33, Fig. 1, looking to the right.

Fig. 4 is a section on line 4.-i, Fig. 1.

Fig. 5 is an end elevation of one of the side wall sections or planks.

Fig. 6 is a detail view of one of the intermediate posts.

Fig. 7 is a plan view, partly in section, of one of the core members.

Figs. S and 9 are sectional views, taken respectively on lines 8-8, 9-9, Fig. 7..

lrlhe collapsible form for concrete walls here illustrated comprises, generally, inner and outer corner posts and intermediate posts having opposing channels, side wall sections or planks having their ends fitting into said channels, and collapsible core pieces between the inner and outer walls. However, some of the foregoing parts may be omitted.

1 designates the corner irons or posts of the inner and outer walls of the form, 2 the intermediate posts, 3 designates corner posts adjustable to different angles to form bay windows. 4f are the side wall sections or sheet metal planks, and 5 are the adjustable core pieces.

The corner posts 1 are formed with channels facing in different directions and each Specification of Letters Patent.

Patented Jan. 39, 191'?.

Application filed May 18, 1914. 'Seria1No- 839,363.

corner post is formed of a sheet metal piece or strip folded between its ends to form flanges arranged at a right angle to each other, and channel pieces of sheet metal secured thereto and having portions opposed to the flanges to form the channels.

As here shown. the outside piece G of the corner iron is folded between its ends to form flanges 7 and 8 and channel pieces 9, 10 are secured to the outside piece 6 and are formed with fianges opposed to the flanges 7, 8 to form channels 11, 12, which receive the ends of the side sections 4. The piece 9 is shown as formed with a base flange 1? lying upon the flange 7 and extending into the interior angle of the outside piece G and having a portion offset from the flange and opposed thereto to form the channel 11, the intermediate portion of the piece 9 adjoining the fiange 13 forming the bottom of the channel 11.

The piece 10 is opposed to the flange 8 of the outside piece 6 and the base thereof laps the bottom 111 of the channel 11 and is secured thereto. The iange 18 of the piece 9 forms the bottom of the channel 12. The piece 6 is called the outside piece for convenience as it is the side of the form on which the exterior angle is located.

15 are locks pivoted at 16 to the corner piece 6 and having hooked shape ends 17 movable into and out of eyes 18 provided on the side wall sections or planks, as will be hereinafter described.

T he intermediate posts 2 are for the purpose of splicing two lengths of the side walls ltogether and each post 2 comprises inner and outer members 19, 2O which are connected at intervals by clamping bolts 21 on the outer ends of which turn nuts 22 having handles '23. As best seen in Fig. 6, each outer clamping member is composed of a plank 24e which is inclosed by a sheet metal case 25. and the inner member 19 is a sheet metal strip which is held spaced apart from the member 20 by a spacing piece of wood 26. Caps 27 are mounted on the tops and lower ends of each member 20 and each cap is provided with a plurality of sets of holes QS for receiving the hooked shape ends of a tie piece 29 connecting the inner and outer intermediate posts. The tie pieces are shiftable to adjust their ends to enter different pairs of holes 28 in'accordance to the thickness of the wall it is desired to produce.

The corner post 8 consists of two sections hinged together at 30 and adjustable to different angles to form bay windows of different angles. These posts 8, like the posts 1, 2, are formed with channels facing in different directions and each section thereof includes an outside piece 81 and a piece 32 bent similarly to the piece 9 of the corner post 1 and secured to the flange 31. Hinge leaves 88, 34 are also secured to the flanges 81 and receive the hinge pin 80. The corner posts 3 are also provided with suitable latches 15.

The side wall sections or planks 4 are bent up out of sheet metal blanks and have their upper and lower margins arranged at an angle to the body forming a channel iron and usually the free edge of each margin is bent inwardly at 36 to form a flange 87 opposed to the major part of the section 4, and each section 4 is formed with a rabbct 38 along one longitudinal edge thereof as the upper one, and with a flange Si) at its other lfn'igil'udinal edge for fitting into the rabbet 38 of the contiguous section 4. rllhe flange 39 is here shown as integral with the maj or part or body of each side wall section 4; and the lower marginal channel iron contiguous to the flange 39 is a separate piece from the body of the side wall and is secured thereto in any suitable manner as by spot welding. By reason of the rabbet 38 and flange 39, the faces of the sections against which the concrete is to be poured are flush so that the face of the concrete wall will be comparatively smooth. Each section 4 is provided with extensions or end pieces 40 of substantially the same form as the major part or body of the section 4, the end pieces 40 telescoping into the section 4 and being adapted to t into channels of the posts 1, 2 and 3 so that the faces of the side sections with which the concrete engages, are flush with the corresponding faces of the posts. The eyes 18 previously referred to are carried by these extensions 40, as clearly seen in Figs. 1 and 2, and are formed with bases 42 engaging the webs of the extensions 40.

Suitable tie pieces 48 are arranged between the outer and inner walls of the form between the posts, these tie pieces extending through notches 44- formed in the wall sections 4 and having' holes at their ends through which keys 45 extend vertically, each key 45 extending through the holes of a plurality of said tie pieces which are arranged in alinement.

The collapsible core pieces 5 include opposing stide sections 46 having top and bottom flanges 47, 48 and also end flanges 49 and 50, the top and end flanges lapping to prevent the concrete from entering the core. The top flanges terminate short of the ends of the walls 4G forl the insertion of keys whichy normally hold the` sides spaced apart and when removed permit collapsing of the walls.

As here shown, the side sections are formed near each end with grooves 51 facing the end flanges and the keys 52 are formed with opposing side flanges 53 which enter the grooves'51 by ifertical endwise movement of thekey, the base or back 54 of the key 52 sliding against one of the end flanges. The key 52 is also formed with a top which has upwardly extending flanges b v means of which the key can be handled. The sides 46 and keys 52 are bent up from sheet metal blanks by suitable dies. Then a bay window is being built, the core pieces touch only at corners and the space between the sections arranged at an angle, is closed by shields, as the shield 55.

ln operation, the corner posts and intermediate posts are sot in position and the side wall sections or planks inserted therein to a predetermined height, the posts being usually 8 ft. in height and the side wall sections 8 or 4 ft. long. lf a hollow wall is to be built, the sections 5 are laid upon the tie pieces at the bottoms of the posts and the concrete poured into the mold, and as the mold fills up to the top of the sections 5, they are collapsed by withdrawing the keys 52 and the cores removed and set upon the next layer of the pieces and the concrete again poured and the cores shifted until the top of the mold is reached. The

mold is permitted to stand until the coni crete is set, whereupon it is collapsed and arranged and set up on the top of the concrete wall, if it is desired to build the wall higher than 8 ft. The tie pieces 43 are left in the concrete wall as well as the tie pieces 29 at the lower ends of the posts, and the projecting ends thereof are knocked o.

What I.claim is:

1. A collapsible form for concrete walls comprising an outside angle iron, inside sheet metal pieces, one of said pieces having a flange lapping one of the flanges of the outside angle iron and secured thereto, a flange offset from the flange of the angle iron and opposed thereto to form a channel, and an intermediate web forming the bot# tom of said channel, and the other inside piece being opposed to the other flange of the angle iron to form a second channel and being secured to said intermediate web portion and side pieces extending into the channels, substantially as and for the purpose described.

2. A collapsible form for concrete walls comprising corner posts and side pieces, the posts including members formed with channels for receiving the ends of the pieces constituting the sides of the form, said members being hinged together, substantially as and for the purpose specified.

3. A collapsible form for concrete walls comprising an upright post having a vertical channel, side sections having their ends extending into the channel, and locking means for connecting the post and the side sections, the locking means being located on the outside of the post and the side sections, substantially as and for the purpose set forth.

l. A collapsible form for concrete walls comprising upright posts formed with chan nels and sheet metal side wall sections each having its longitudinal margin bent at an angle to the body thereof forming a channel iron, each. section having extensions at its ends which telescope into the ends of the body of the section, the extensions being designed to extend into the channels of the posts so that the outer faces of the sections and the posts are flush, substantially as and for the purpose set forth.

5. A collapsible form for concrete walls comprising upright posts formed with channels and sheet metal side wall sections having their longitudinal margins bent at an angle to the body thereof forming a channel, each section having extensions at its ends which telescope into the ends of the body of the section, the extensions being designed to extend into the channels of the posts so that the outer faces of the sections and the posts are flush, and each section being formed with an external rabbeted channel along one longitudinal edge thereof and a flange at the other longitudinal edge thereof for entering the rabbeted channel of the five cents each, by

contiguous section, substantially as and for the purpose specified.

6. A collapsible core piece for forms for concrete walls comprising opposing side sections, and keys movable vertically between the opposing sections, the keys being located at opposite ends of the core piece, the sections and the key having grooves and flanges which interlock by an endwise movement of the key, substantially as and for the purpose -set forth.

7. A collapsible core piece for forms for concrete walls comprising opposing sections having top flanges and end flanges, the top flanges tern'iinatii'ig short of the ends of the core piece and the sides being formed with vertical internal grooves facing the end flanges, and keys each having a back and side flange, the back engaging the end flanges of the opposing sections, and the side flanges entering the grooves by an endwise movement of the keys, the key being movable endwisely through the space between the top flanges and the end flanges of the opposing sections, substantially as and for the purpose described.

In testimony whereof, I have hereunto signed my name in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 18th day of April, 1914i.

PATRICK D. SKAHEN.

Witnesses Giras. H. YOUNG, JANE H. GLAZIER.

addressing the Commissioner of Iatents,

Washington, D. C. 

